Iran's top nuclear negotiator and conservative presidential candidate Saeed Jalili prays at the tomb of Shah Abdolazim before voting in the first round of the presidential elections in Tehran, June 14, 2013.

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In this photo released by an official website of the Iranian supreme leader's office, Supreme Leader Ayatollah Ali Khamenei casts his ballot in the presidential election without publicly endorsing a candidate, in Tehran, June 14, 2013.

Credit: AP/Office of the Supreme Leader

A member of the electoral committee takes information from a passport of an Iranian voter for the presidential election in the Iranian Embassy in Beirut, Lebanon, June 14, 2013.

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Iranian women stand in line at a polling station in Qom, Iran, June 14, 2013.

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Iranian men queue to get ballots for the presidential and municipal councils elections in a polling station in Tehran, June 14, 2013.

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Two Iranian women fill in their ballots for the presidential and municipal councils elections in a polling station in Tehran, June 14, 2013.

Credit: Vahid Salemi/AP

Iran's top nuclear negotiator and conservative presidential candidate, Saeed Jalili (C) is surrounded by his bodyguards as he prepares to cast his ballot in the first round of the presidential election in Tehran, June 14, 2013.

Credit: Behrouz Mehri/AFP/Getty Images

Two Iranian women cast their ballots during the presidential and municipal councils elections in a polling station in Tehran, June 14, 2013.

Credit: Vahid Salemi/AP

Female supporters of the Iranian presidential candidate Saeed Jalili, Iran's top nuclear negotiator, chant slogans, in a campaign rally, two days prior to the election, in Tehran, June 12, 2013.

The election, to be held on Friday, June 14, will choose a successor for outgoing President Mahmoud Ahmadinejad who under the law cannot run for another term.

A supporter of Iranian presidential candidate Hasan Rowhani, a former Iranian nuclear negotiator, rides his motor bike with Rowhani's poster during a street campaign in Tehran, June 12, 2013.

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Supporters of Iranian presidential candidate Ali Akbar Velayati, a conservative former foreign minister, hold up balloons in front of a portrait of Iranian supreme leader Ayatollah Ali Khamenei during a campaign rally two days prior to the election, in Tehran, June 12, 2013.

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Supporters of Iranian presidential candidate Mohammad Bagher Qalibaf, who is also Tehran's mayor, chant slogans and hold campaign posters during a campaign event in Tehran, June 9, 2013.

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A female supporter of the Iranian presidential candidate Saeed Jalili, Iran's top nuclear negotiator, holds up his poster during a campaign rally two days prior to the election, in Tehran, June 12, 2013.

Credit: Vahid Salemi/AP

Supporters of presidential candidate Ali Akbar Velayati, a conservative former Foreign Minister, hold up his posters during a campaign rally two days prior to the presidential election, in Tehran, June 12, 2013.

Rowhani talked about easing political restrictions imposed by Iranian authorities and told crowds that rebuilding ties with Western governments is better than denouncing them as enemies.

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Presidential candidate Hasan Rowhani, a former top nuclear negotiator, attends a rally in front of a portrait of the late Iranian revolutionary founder Ayatollah Khomeini in Tehran, Iran, June 1, 2013.

Credit: Ebrahim Noroozi/AP

Men chant slogans in a ceremony commemorating the death anniversary of the late revolutionary founder Ayatollah Khomeini at his shrine just outside Tehran, Iran, June 4, 2013.

Khamenei urged presidential candidates on Tuesday not to make concessions to appease the West, an implied rebuke to several of the candidates running in June 14 elections who said that they would focus on improving the Islamic Republic's relations with other countries.

Credit: AP/Office of the Supreme Leader

An Iranian man poses in his garment shop in the religious Shiite city of Qom, June 9, 2013.

Candidates in this week's presidential election have argued that Mahmoud Ahmadinejad's "mismanagement" is largely responsible for Iran's severe economic crisis. They have accused the outgoing leader of squandering the country's oil wealth.